Homework Help

What do the metals calcium, magnesium, sodium, potassium, copper, and iron have in common?

user profile pic

patheiber | (Level 2) eNoter

Posted January 30, 2011 at 5:43 AM via web

dislike 1 like

What do the metals calcium, magnesium, sodium, potassium, copper, and iron have in common?

1 Answer | Add Yours

user profile pic

trophyhunter1 | College Teacher | (Level 3) Senior Educator

Posted February 19, 2011 at 3:01 AM (Answer #1)

dislike 0 like

Every one of these elements can react with oxygen to form an oxide or if oxygen and water are present, a hydroxide. For example, iron and oxygen chemically combine to form rust, or iron oxide. Sodium will burn in oxygen to form sodium peroxide. Because all metals to an extent will react with oxygen, most are not found in a pure state in nature, rather, they are found in a compound usuallly as an oxide. When a copper structure like a statue, or when found as an architectural element on a building is seen, it is usually green due to the fact that you are looking at copper oxide. Therefore, the answer is that all of the elements react with oxygen.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes